Also, many countries still use CiV style WWII infantry as the backbone of their forces. They didn't just dissapear at the Vietnam war or the appearance of mech infantry. For these reasons I think the current progression is fine.
Exactly! Except that: there's no such thing as WWII-era infantry that isn't basically the same as (end-of-) WWI infantry. But you're dead-on that the tech of WWII (same tactically as end-of-WWI) is still in use all over by established armies. WWII-build submachine guns like the M3, that use handgun-equivalent ammo, are still in heavy use, and anything fancier like a HK is going to use the same cartridges.
The cartridge a gun uses is the gauge of progress. Two guns built around the same round are functionally the same.
Today's guns, whether used by armies or police forces or gangs, anywhere in the world, are largely built around four cartridges or likenesses of:
9MM Parabellum (
1901) handguns and submachine guns
.45 ACP (
1904) same as previous
7.62 (Rifle): the standard for machine guns, semi-automatic rifles, and non-automatic rifles for 110 years and going. Most prevelant current designs are the 7.62 "Rimmed Russian" (
1891) and the 7.62 NATO which is based on the .30-06 (
1906)
Intermediate Rifle: this is a broadish range that I'll define between the 7.62x39 Soviet (as in the AK-47; cartridge designed in
1943 but not to have an impact on warfare until Viet Nam) and the 5.56 NATO (as in the AR-15; cartridge designed in
1964).
The last cartidge category gives rise to the modern assault rifle which as mentioned in my previous post is the only major change to infantry "combat strength" since 1906, leaving out other late-era things like body armor and goggles that really lump better with mechanized inf.
My point is not just "let's be butthurt by historical inaccuracy". My point is, thowing a super-powered imaginary unit into Plastics that makes all other melee units obsolete hurts gameplay both for feel-of-combat and balance-of-tech-tree reasons
and is totally, completely, utterly without historical logic.